2008

In addition, you can calculate radiosity up to an Initial Quality less than 100
percent, then later increase the value of Initial Quality, click Continue, and
resume solving radiosity.
In either case, Continue saves time by avoiding regenerating the radiosity
solution from scratch.
Once the full Initial Quality percentage has been reached, clicking Continue
has no effect.
Stop Stops the radiosity processing. The Start menu changes to Continue.
You can later click Continue to resume radiosity processing, as described for
the Start menu.
Keyboard shortcut: Esc
Process group
The options in this group set the behavior of the first two stages of the radiosity
solution, Initial Quality and Refine.
Initial Quality Sets the quality percentage at which to stop the Initial Quality
stage, up to 100%. For example, if you specify 80%, you will get a radiosity
solution that is 80% accurate in energy distribution. A goal of 80 to 85% is
usually sufficient for good results.
During the Initial Quality stage, the radiosity engine bounces rays around the
scene and distributes energy on surfaces. Between each iteration, the engine
measures the amount of variance (noise between surfaces) that was computed.
Most of the brightness of the scene is distributed in the early iterations. The
contribution to the scene’s average brightness decreases logarithmically
between iterations. After the first few iterations, the brightness of the scene
does not increase much, but subsequent iterations reduce the variance in the
scene.
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